a new law today signed by vladimir putin bans all adoptions by american families. there appears to be no exceptions for families already adopting but some are holding out hope. >> she's trying to be very optimistic, she's saying no i'm sure it's going to happen. and i'm sitting here thinking, oh my gosh, i'm sure this might not happen. >> reporter: agencies across the country like adopt international and domestic services are trying to figure out how to proceed. there's an online petition and they're contacting families trying to start a letter writing campaign. they say something needs to be done. >> then what happens to the kids that were told i'm your mommy i'm coming to get you? then they don't come. >> reporter: the agency has two other families going through the process who's class was scheduled in february. for now that class has not been cancelled. in san francisco, ann rubin, ktvu channel 2 news. >>> more details now on u.s. reaction. the state department announced that they deeply regret the announcement. >>> crisis averted for now. a potentially cripplin